Device for creating an optical illusion



E HABERFELD DEVICE FOR CREATING AN OPTICAL ILLUSION Flled March 11, 1926Oct. 19 1926.

Patented a. 19, 1926.

E'UGEN HAIBERFEL D, OF BERLIN-HALENSEE, GERMANY, ASSIGNOR TO LATHAMLITHO & PRINTING CO.,-' OF NEW YORK, N.

DEVICE FOR CREATING Y., A CORPORATION OF NEW YORK.

AN OPTICAL ILLUSION.

Application filed March 11, 1926. Serial No. 94,072.

' My invention has for its object to produce a device for creating anoptical illusion of a liquid continually travelling in one directionwhich I accomplish by applying alcertain amount. of heat to aliquidcontainer into which extends a narrow tube into and through whichthe liquid is forced by the heat applied to the container. The containeris provided with a tubular extension into which the liquid passes. Asthe liquid reaches a certain point in said tubularextension it hassufficiently cooledofi so as to return along the wall of :the'tubularextension and through the narrow tube to the con- -"tainer, while-otherliquid passes throu h said tubular extension in the opposite rection.-If the tubular extension is made of glass or other transparent material,there is created the illusion of a continual flow of liquid through thetubular extension, as the small amount of.liquid returning to thecontainer along the inner wall of the tubular .extension does not becomevisible, except perhaps on very close examination. Such a device may beused as an advertising device,

to create, ,for instance, the illusion of a person continually suckingup a liquid through a straw, but, of course, other uses for such adevice will readily suggest themselves. 4

In describing. my invention in greater detail, I have reference to theaccompanying drawing, in which an embodiment ofthe invention has beenillustrated, by way of ex-.

ample, Fig. 1 showing a woman "at a soda fountain drinking froma lassthrough a straw; Fig. 2 is a sectiona view, showing the arrangement ofthe glass and the straw and the source of heat; Fig.3 is'a longitudi- 40nal section through the container representing the straw.

The faceof a woman with a window in the background is pictoriallypresented on a large cardboard,-supported 1n position in a show-windowor at any other suitable lace by a wing 2 (Fig. 2,). On a shelf 3 inout, there is placed a cup 4 which may be either opaque or translucent.Within said cup is disposed the liquid container 5, which in thedrawing, is shown bulb-shaped, but may of course, have any desired orconvenient shape to suit the conditions. Into this, container 5, adaptedto hold a certain amount of liquid shown at 6 in Fig. 3 projects anarrow .tube 7, the lower end of which is immersed into connected bywires 13 to the liquid 6. At the upper end of the container 5, where thenarrow tube 7 terminates closing the container by.a circular flange 8,the container is provided with a transparentjubular extension 9 which isconsiderably larger than the narrow tube 7 and which is sealed at'itsextremity as shown at '10 in Fig. 3. Below the bulb-shaped con tainer 5is disposed a. (Fig.2) held in an ordinary lamp-socket 12 source ofelectrical energy.

small electric lamp 11' some;v convenient When the electric lamp v11 isconnected,

the heat radiated thereby heats the liquid in the bulb-shaped container5 sufliciently to force the same up into the narrow tube 7, and as moreand more liquid is thus forced through said tube, it enters the largetubular extension 9; rising therein to a certain height indicated at 14in Fig. 2. The upward direction of flow of. the liquid in thetubular'extension 9 is indicated by the large arrow.15 in Fig. After theliquid has risen to a certain height in said tubular extension 9, itcools oil and :slowly glides down along the inner wall of extens on- 9and through the narrow tube'7 back into the container 5, thisdirec'tiomof flow of the liquid being indicated by the small arrowsindicated at 16 and 17 in Fig. 3. Thus' the illusion of a substantiallyuninterrupted upward flow of liquid in the tubular extension 9 iscreated, so that the casual observer in case of the illustrated examplereceives the impiress'on of liquid being continually s 0 ed p throughthetube 9.

I claim as my invention:

1. The combination of a closed liquid container, anarrow tube extendinginto said container being immersed into the liquid therein, a tubularextension provided on said container and closed at its free end, asource of heat for heating the liquid in said container, and means forpo'sitloning said source of heat in proper relation to said container. v

2. The combination of a closed liquid container, anarrow tube extendinginto said container being immersed into the liquid therein, vided onsaid container and sealed at its free end, a source of heat for heatingthe liquid in said container and means for o sitionin said source ofheat in proper re ation to. id container.

a transparent tubular extension pro- 3. The combination of a closedliquid container, a narrow tube extending into said container beingimmersed into the liquid therein, a transparent tubular extensionprovided on said container and sealedat its free end, a source of heatfor heating the liquid in said container, means. for maintaining [saidsource of heat in proper position with #tainer, a narrow tuloe extendinspent to said container,

res ect to said container, and means for-eoncea ing said container andsource of heat;

4. The'eombination of a'closed liquid c0n'- into said nontain'er andimmersed into'the liquid therein, a transparent tubular extensionprovided on said container and sealed at its free end,

a source ofheat for heating the liquid in saideontainer, means formaintaining said source of heat in proper position with reeeaasa andtranslucent I means for oamouflaging said container and source of heat.a

5. Thecombination of a closed liquid eontainer, .a narrow tube extendinginto said container being immersed into the liquid therein, atransparent tubular extension provided on said container representing astraw and sealed at its free end, an also noses HABERFELDQ

